[Ricardobez]

Hi to all on this forum. I am from South Africa and love following you forum for the last couple of months now. I really need some advise on my BMW F30 328i. Hope to get some answers here.

I have general rough idle on my car. When I start and even when it is warmed up after driving a few kilometres. The car hesitates ans on occasion stalls, even worse with the air con running. I have checked the MAF and MAP values all seems good and cleaned them all. I have new Vanos installed and timing chain and followers.

The previous owner removed the cat internals. . Soni am wondering if this is not oxygen sensor related, as it could have gotten damaged when they removed the cat. The oxygen sensor reading is where I am not so clued up. I know it ranges from 0volts to 0.8 volts. However mine it not regular. On idle it will be at 0.9 and jump around to.0.7 then down to 0.01 it's all over the place. Any suggestions here? These images are at idle. The last graph is one that was taken driving on highway at constant speed

[stanodex]

any update?